22940280 has 128 divisors (see below), whose sum is σ = 83462400. Its totient is φ = 5558400.

The previous prime is 22940273. The next prime is 22940297. The reversal of 22940280 is 8204922.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10915 + ... + 12845.

It is an arithmetic number, because the mean of its divisors is an integer number (652050).

Almost surely, 2^22940280 is an apocalyptic number.

22940280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22940280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41731200).

22940280 is an abundant number, since it is smaller than the sum of its proper divisors (60522120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22940280 is a wasteful number, since it uses less digits than its factorization.

22940280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1952 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22940280 is about 4789.6012360112. The cubic root of 22940280 is about 284.1403458946.

It can be divided in two parts, 22940 and 280, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 22940280 in words is "twenty-two million, nine hundred forty thousand, two hundred eighty".